I tried checking with the configuration utility (via Control-C while booting), could not find any way ..
I have tried different disk backplanes on Supermicro 745TQ, 836A and 846E2 all with same results. Regards, WL On Oct 27, 2011, at 8:03 AM, Jason Matthews wrote: > > > What is the link speed of the SAS drives as reported by the controller? > > j. > > -----Original Message----- > From: Hong Wei Liam [mailto:weiliam.h...@gmail.com] > Sent: Wednesday, October 26, 2011 4:59 PM > To: Discussion list for OpenIndiana > Subject: Re: [OpenIndiana-discuss] Poor relative performance of SAS overSATA > drives > > I had initially tried only having the SAS drives installed with the same > results. > > Later, the SATA drives were added in for comparison. > > Regards, > WL > > > On Oct 27, 2011, at 2:27 AM, Jason J. W. Williams wrote: > >> Is the card hosting any SATA and SAS drives on the same port, or are >> they segregated SAS on one and SATA on the other? >> >> -J >> >> On Wed, Oct 26, 2011 at 9:01 AM, weiliam.hong <weiliam.h...@gmail.com> > wrote: >>> Greetings, >>> >>> I have a fresh installation of OI151a: >>> - SM X8DTH, 12GB RAM, LSI 9211-8i (latest IT-mode firmware) >>> - pool_A : SG ES.2 Constellation (SAS) >>> - pool_B : WD RE4 (SATA) >>> - no settings in /etc/system >>> >>> >>> *zpool status output* >>> ------------------- >>> admin@openindiana:~# zpool status >>> pool: pool_A >>> state: ONLINE >>> scan: none requested >>> config: >>> >>> NAME STATE READ WRITE CKSUM >>> pool_A ONLINE 0 0 0 >>> mirror-0 ONLINE 0 0 0 >>> c7t5000C50035062EC1d0 ONLINE 0 0 0 >>> c8t5000C50034C03759d0 ONLINE 0 0 0 >>> >>> pool: pool_B >>> state: ONLINE >>> scan: none requested >>> config: >>> >>> NAME STATE READ WRITE CKSUM >>> pool_B ONLINE 0 0 0 >>> mirror-0 ONLINE 0 0 0 >>> c1t50014EE057FCD628d0 ONLINE 0 0 0 >>> c2t50014EE6ABB89957d0 ONLINE 0 0 0 >>> >>> >>> *Load generation via 2 concurrent dd streams:* >>> -------------------------------------------------- >>> dd if=/dev/zero of=/pool_A/bigfile bs=1024k count=1000000 >>> dd if=/dev/zero of=/pool_B/bigfile bs=1024k count=1000000 >>> >>> >>> *Initial Observation* >>> ------------------- >>> >>> capacity operations bandwidth >>> pool alloc free read write read write >>> ---------- ----- ----- ----- ----- ----- ----- >>> pool_A 1.68G 2.72T 0 652 0 73.4M >>> mirror 1.68G 2.72T 0 652 0 73.4M >>> c7t5000C50035062EC1d0 - - 0 619 0 73.4M >>> c8t5000C50034C03759d0 - - 0 619 0 73.4M >>> ---------- ----- ----- ----- ----- ----- ----- >>> pool_B 1.54G 1.81T 0 1.05K 0 123M >>> mirror 1.54G 1.81T 0 1.05K 0 123M >>> c1t50014EE057FCD628d0 - - 0 1.02K 0 123M >>> c2t50014EE6ABB89957d0 - - 0 1.01K 0 123M >>> >>> * >>> 10-15mins later* >>> ------------=-- >>> >>> capacity operations bandwidth >>> pool alloc free read write read write >>> ---------- ----- ----- ----- ----- ----- ----- >>> pool_A 15.5G 2.70T 0 50 0 6.29M >>> mirror 15.5G 2.70T 0 50 0 6.29M >>> c7t5000C50035062EC1d0 - - 0 62 0 7.76M >>> c8t5000C50034C03759d0 - - 0 50 0 6.29M >>> ---------- ----- ----- ----- ----- ----- ----- >>> pool_B 28.0G 1.79T 0 1.07K 0 123M >>> mirror 28.0G 1.79T 0 1.07K 0 123M >>> c1t50014EE057FCD628d0 - - 0 1.02K 0 123M >>> c2t50014EE6ABB89957d0 - - 0 1.02K 0 123M >>> >>> >>> >>> Questions: >>> 1. Why does SG SAS drives degrade to <10 MB/s while WD RE4 remain > consistent >>> at >100MB/s after 10-15 min? >>> 2. Why does SG SAS drive show only 70+ MB/s where is the published > figures >>> are > 100MB/s refer here >>> > <http://www.seagate.com/www/en-us/products/enterprise-hard-drives/constellat > ion-es/constellation-es-2/#tTabContentSpecifications>? >>> 3. All 4 drives are connected to a single HBA, so I assume the mpt_sas >>> driver is used. Are SAS and SATA drives handled differently ? >>> >>> >>> This is a test server, so any ideas to try and help me understand greatly >>> appreciated. >>> >>> >>> Many thanks, >>> WL >>> >>> >>> >>> >>> _______________________________________________ >>> OpenIndiana-discuss mailing list >>> OpenIndiana-discuss@openindiana.org >>> http://openindiana.org/mailman/listinfo/openindiana-discuss >>> >> _______________________________________________ >> OpenIndiana-discuss mailing list >> OpenIndiana-discuss@openindiana.org >> http://openindiana.org/mailman/listinfo/openindiana-discuss > > > _______________________________________________ > OpenIndiana-discuss mailing list > OpenIndiana-discuss@openindiana.org > http://openindiana.org/mailman/listinfo/openindiana-discuss > _______________________________________________ > OpenIndiana-discuss mailing list > OpenIndiana-discuss@openindiana.org > http://openindiana.org/mailman/listinfo/openindiana-discuss _______________________________________________ OpenIndiana-discuss mailing list OpenIndiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss
